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Astronomy & Astrophysics Home > Research
 

1.The Solar System

We study the atmospheres of the Jovian planets and Titan as well ascometary coma and tail using spectroscopy and radiative transfer calculations.? We analyze the chemical composition and physical properties of the gaseous and icy organic molecules and dust in the aforementioned celestial bodies, and suggest candidate molecules for the unidentified spectral features. We also study the particle size and age of thelunarregolith via polarimetric observations and lab experiments, which will help our understanding on the evolution of the small bodies in the Solar system.



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Titan’s Atmosphere:

Comparison between the infrared photometry (Gemini telescope) and the model

Titan’s Atmosphere:

Comparison between the infrared photometry (Gemini telescope) and the model

major research field
 

- Spectroscopy and modelling of the atmospheres around the planets/satellites/comets
- Properties and distribution of organic molecules in the Solar system
- Estimation of particles size and age of the lunar regolith via polarimetry and lab experiments


2.Numerical Astrophysics

 

We study the atmospheres of the Jovian planets and Titan as well ascometary coma and tail using spectroscopy and radiative transfer calculations.? We analyze the chemical composition and physical properties of the gaseous and icy organic molecules and dust in the aforementioned celestial bodies, and suggest candidate molecules for the unidentified spectral features. We also study the particle size and age of thelunarregolith via polarimetric observations and lab experiments, which will help our understanding on the evolution of the small bodies in the Solar system.

 

   
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Hydrodynamic Simulation:
Formation of the Central Molecular Zone

N-body Simulation:
Formation of the galactic warp



 

 

major research field
 

- Formation and evolution of galaxies from cosmological, hydrodynamic simulations
- Formation and evolution of star clusters
- Inward migration of gas from the galactic disk and subsequent star formation
- Secular evolution of galactic centers




 

3.Infrared Astronomy

We develop optical and infrared instruments and observe external galaxies and star formation regions. Recently, a new CCD camera, CQUEAN (CCD Camera for Quasar in EArlyuNiverse), was made at Kyung Hee University and installed at the 2.1m telescope at the McDonald University in 2010 August. We are also participating on the IGRINS (Immersion GRatingINfrared Spectrometer) project and the GMTNIRS (Giant Magellan Telescope Near-InfraRed Spectrograph) together with the Korea Astronomy and Space Science Institute and the University of Texas.

 

   
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major research field
 

- Development of Optical and Infrared Instruments
- Development of Software for Infrared Spectrograph
- Optical and Infrared Observations of Star Formation Regions
- Infrared and Radio Observations of the Central Regions of Galaxies






4.Star formation, ISM, and Astrochemistry

The main research focus in our group is on the dynamical and chemical evolution during star formation, especially, in the early embedded phase. We use infrared space telescopes such as Spitzer and Herschel as well as ground-based telescopes including radio interferometry to study detail physical and chemical structures of the envelope and disk surrounding the central protostar. We are also developing codes to calculate chemistry, gas energetics, and radiative transfer.

 

 

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Korean VLBI Network: Tamna Site

Herschel Space Observatory



major research field
 

- Observations of protostars and protoplanets using infrared space telescopes and radio telescopes/interferometers
- Modelling the dynamical and chemical evolution during the star formation processes
- Study of formation mechanism of the Solar system using astrochemical calculations
- Evolution of protoplanetary disks and the formation of planets